/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/locks/test_locks_14-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:10:46,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:10:46,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:10:46,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:10:46,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:10:46,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:10:46,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:10:46,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:10:46,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:10:46,651 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:10:46,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:10:46,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:10:46,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:10:46,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:10:46,654 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:10:46,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:10:46,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:10:46,654 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:10:46,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:10:46,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:10:46,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:10:46,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:10:46,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:10:46,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:10:46,656 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:10:46,656 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:10:46,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:10:46,657 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:10:46,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:10:46,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:10:46,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:10:46,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:10:46,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:10:46,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:10:46,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:10:46,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:10:46,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:10:46,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:10:46,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:10:46,659 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:10:46,659 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:10:46,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:10:46,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:10:46,659 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:10:46,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:10:46,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:10:46,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:10:46,873 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:10:46,874 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:10:46,875 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_14-1.c [2023-12-15 18:10:47,832 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:10:47,994 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:10:47,995 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_14-1.c [2023-12-15 18:10:48,006 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a502ce733/5db58a2e9cf74bcf858d0acbce9736c3/FLAG573d309d9 [2023-12-15 18:10:48,019 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a502ce733/5db58a2e9cf74bcf858d0acbce9736c3 [2023-12-15 18:10:48,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:10:48,021 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:10:48,022 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:10:48,022 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:10:48,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:10:48,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47253b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48, skipping insertion in model container [2023-12-15 18:10:48,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,053 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:10:48,156 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_14-1.c[5283,5296] [2023-12-15 18:10:48,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:10:48,166 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:10:48,182 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_14-1.c[5283,5296] [2023-12-15 18:10:48,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:10:48,191 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:10:48,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48 WrapperNode [2023-12-15 18:10:48,192 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:10:48,193 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:10:48,193 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:10:48,193 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:10:48,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,230 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 196 [2023-12-15 18:10:48,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:10:48,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:10:48,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:10:48,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:10:48,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,249 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:10:48,250 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,258 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:10:48,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:10:48,259 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:10:48,259 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:10:48,259 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:10:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:10:48,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:10:48,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:10:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:10:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:10:48,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:10:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:10:48,365 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:10:48,366 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:10:48,558 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:10:48,577 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:10:48,578 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:10:48,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:10:48 BoogieIcfgContainer [2023-12-15 18:10:48,578 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:10:48,580 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:10:48,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:10:48,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:10:48,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:10:48" (1/3) ... [2023-12-15 18:10:48,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3d57ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:10:48, skipping insertion in model container [2023-12-15 18:10:48,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (2/3) ... [2023-12-15 18:10:48,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3d57ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:10:48, skipping insertion in model container [2023-12-15 18:10:48,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:10:48" (3/3) ... [2023-12-15 18:10:48,583 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_14-1.c [2023-12-15 18:10:48,598 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:10:48,598 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:10:48,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:10:48,630 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@32ab1c83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:10:48,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:10:48,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 49 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:48,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-15 18:10:48,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:48,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:48,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:48,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:48,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1808029715, now seen corresponding path program 1 times [2023-12-15 18:10:48,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:48,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835737006] [2023-12-15 18:10:48,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:48,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:48,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:48,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835737006] [2023-12-15 18:10:48,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835737006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:48,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:48,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:48,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958918342] [2023-12-15 18:10:48,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:48,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:48,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:48,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:48,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:48,869 INFO L87 Difference]: Start difference. First operand has 50 states, 48 states have (on average 1.9583333333333333) internal successors, (94), 49 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:48,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:48,919 INFO L93 Difference]: Finished difference Result 102 states and 189 transitions. [2023-12-15 18:10:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:48,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-15 18:10:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:48,928 INFO L225 Difference]: With dead ends: 102 [2023-12-15 18:10:48,929 INFO L226 Difference]: Without dead ends: 92 [2023-12-15 18:10:48,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:48,935 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 70 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:48,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 178 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:48,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-15 18:10:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 62. [2023-12-15 18:10:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.9180327868852458) internal successors, (117), 61 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:48,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 117 transitions. [2023-12-15 18:10:48,960 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 117 transitions. Word has length 20 [2023-12-15 18:10:48,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:48,960 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 117 transitions. [2023-12-15 18:10:48,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 117 transitions. [2023-12-15 18:10:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-15 18:10:48,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:48,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:48,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:10:48,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:48,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:48,963 INFO L85 PathProgramCache]: Analyzing trace with hash 898589679, now seen corresponding path program 1 times [2023-12-15 18:10:48,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:48,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099064170] [2023-12-15 18:10:48,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:48,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099064170] [2023-12-15 18:10:49,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099064170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099359605] [2023-12-15 18:10:49,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,029 INFO L87 Difference]: Start difference. First operand 62 states and 117 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,054 INFO L93 Difference]: Finished difference Result 153 states and 288 transitions. [2023-12-15 18:10:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-15 18:10:49,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,057 INFO L225 Difference]: With dead ends: 153 [2023-12-15 18:10:49,057 INFO L226 Difference]: Without dead ends: 92 [2023-12-15 18:10:49,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,058 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 68 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 196 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-15 18:10:49,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2023-12-15 18:10:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.898876404494382) internal successors, (169), 89 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 169 transitions. [2023-12-15 18:10:49,065 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 169 transitions. Word has length 20 [2023-12-15 18:10:49,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,066 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 169 transitions. [2023-12-15 18:10:49,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,066 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 169 transitions. [2023-12-15 18:10:49,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 18:10:49,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:10:49,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,067 INFO L85 PathProgramCache]: Analyzing trace with hash -214134265, now seen corresponding path program 1 times [2023-12-15 18:10:49,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23023478] [2023-12-15 18:10:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23023478] [2023-12-15 18:10:49,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23023478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89202122] [2023-12-15 18:10:49,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,115 INFO L87 Difference]: Start difference. First operand 90 states and 169 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,135 INFO L93 Difference]: Finished difference Result 140 states and 257 transitions. [2023-12-15 18:10:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-15 18:10:49,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,141 INFO L225 Difference]: With dead ends: 140 [2023-12-15 18:10:49,142 INFO L226 Difference]: Without dead ends: 95 [2023-12-15 18:10:49,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,143 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 70 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 221 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-15 18:10:49,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2023-12-15 18:10:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.858695652173913) internal successors, (171), 92 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 171 transitions. [2023-12-15 18:10:49,150 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 171 transitions. Word has length 21 [2023-12-15 18:10:49,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,151 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 171 transitions. [2023-12-15 18:10:49,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,151 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 171 transitions. [2023-12-15 18:10:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 18:10:49,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:10:49,152 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2086688325, now seen corresponding path program 1 times [2023-12-15 18:10:49,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260414293] [2023-12-15 18:10:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260414293] [2023-12-15 18:10:49,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260414293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541104851] [2023-12-15 18:10:49,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,214 INFO L87 Difference]: Start difference. First operand 93 states and 171 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,230 INFO L93 Difference]: Finished difference Result 180 states and 332 transitions. [2023-12-15 18:10:49,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-15 18:10:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,238 INFO L225 Difference]: With dead ends: 180 [2023-12-15 18:10:49,239 INFO L226 Difference]: Without dead ends: 178 [2023-12-15 18:10:49,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,244 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 65 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 170 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-15 18:10:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 124. [2023-12-15 18:10:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.853658536585366) internal successors, (228), 123 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 228 transitions. [2023-12-15 18:10:49,253 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 228 transitions. Word has length 21 [2023-12-15 18:10:49,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,253 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 228 transitions. [2023-12-15 18:10:49,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,253 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 228 transitions. [2023-12-15 18:10:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 18:10:49,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:10:49,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,255 INFO L85 PathProgramCache]: Analyzing trace with hash 498340423, now seen corresponding path program 1 times [2023-12-15 18:10:49,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360986868] [2023-12-15 18:10:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360986868] [2023-12-15 18:10:49,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360986868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015872559] [2023-12-15 18:10:49,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,298 INFO L87 Difference]: Start difference. First operand 124 states and 228 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,309 INFO L93 Difference]: Finished difference Result 300 states and 554 transitions. [2023-12-15 18:10:49,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-15 18:10:49,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,310 INFO L225 Difference]: With dead ends: 300 [2023-12-15 18:10:49,310 INFO L226 Difference]: Without dead ends: 180 [2023-12-15 18:10:49,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,311 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 67 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 197 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-15 18:10:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2023-12-15 18:10:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.8418079096045197) internal successors, (326), 177 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 326 transitions. [2023-12-15 18:10:49,318 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 326 transitions. Word has length 21 [2023-12-15 18:10:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,319 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 326 transitions. [2023-12-15 18:10:49,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 326 transitions. [2023-12-15 18:10:49,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 18:10:49,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:10:49,320 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash 263041028, now seen corresponding path program 1 times [2023-12-15 18:10:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802701796] [2023-12-15 18:10:49,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802701796] [2023-12-15 18:10:49,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802701796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071618565] [2023-12-15 18:10:49,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,353 INFO L87 Difference]: Start difference. First operand 178 states and 326 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,368 INFO L93 Difference]: Finished difference Result 269 states and 489 transitions. [2023-12-15 18:10:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-15 18:10:49,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,369 INFO L225 Difference]: With dead ends: 269 [2023-12-15 18:10:49,370 INFO L226 Difference]: Without dead ends: 182 [2023-12-15 18:10:49,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,376 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 69 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 217 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-15 18:10:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2023-12-15 18:10:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.8212290502793296) internal successors, (326), 179 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 326 transitions. [2023-12-15 18:10:49,390 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 326 transitions. Word has length 22 [2023-12-15 18:10:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,390 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 326 transitions. [2023-12-15 18:10:49,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 326 transitions. [2023-12-15 18:10:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 18:10:49,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:10:49,391 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1731103678, now seen corresponding path program 1 times [2023-12-15 18:10:49,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177122420] [2023-12-15 18:10:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177122420] [2023-12-15 18:10:49,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177122420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80984521] [2023-12-15 18:10:49,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,434 INFO L87 Difference]: Start difference. First operand 180 states and 326 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,451 INFO L93 Difference]: Finished difference Result 524 states and 952 transitions. [2023-12-15 18:10:49,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-15 18:10:49,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,454 INFO L225 Difference]: With dead ends: 524 [2023-12-15 18:10:49,454 INFO L226 Difference]: Without dead ends: 350 [2023-12-15 18:10:49,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,455 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 67 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 172 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-15 18:10:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 348. [2023-12-15 18:10:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.8040345821325647) internal successors, (626), 347 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 626 transitions. [2023-12-15 18:10:49,471 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 626 transitions. Word has length 22 [2023-12-15 18:10:49,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,471 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 626 transitions. [2023-12-15 18:10:49,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,472 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 626 transitions. [2023-12-15 18:10:49,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 18:10:49,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:10:49,473 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,473 INFO L85 PathProgramCache]: Analyzing trace with hash -142755776, now seen corresponding path program 1 times [2023-12-15 18:10:49,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300727152] [2023-12-15 18:10:49,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300727152] [2023-12-15 18:10:49,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300727152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721152891] [2023-12-15 18:10:49,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,507 INFO L87 Difference]: Start difference. First operand 348 states and 626 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,520 INFO L93 Difference]: Finished difference Result 448 states and 812 transitions. [2023-12-15 18:10:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-15 18:10:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,522 INFO L225 Difference]: With dead ends: 448 [2023-12-15 18:10:49,523 INFO L226 Difference]: Without dead ends: 446 [2023-12-15 18:10:49,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,523 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 62 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 239 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2023-12-15 18:10:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 348. [2023-12-15 18:10:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.792507204610951) internal successors, (622), 347 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 622 transitions. [2023-12-15 18:10:49,534 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 622 transitions. Word has length 22 [2023-12-15 18:10:49,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,535 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 622 transitions. [2023-12-15 18:10:49,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,535 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 622 transitions. [2023-12-15 18:10:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-15 18:10:49,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:10:49,536 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2124393732, now seen corresponding path program 1 times [2023-12-15 18:10:49,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310729758] [2023-12-15 18:10:49,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310729758] [2023-12-15 18:10:49,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310729758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857668654] [2023-12-15 18:10:49,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,573 INFO L87 Difference]: Start difference. First operand 348 states and 622 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,591 INFO L93 Difference]: Finished difference Result 660 states and 1192 transitions. [2023-12-15 18:10:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-15 18:10:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,594 INFO L225 Difference]: With dead ends: 660 [2023-12-15 18:10:49,594 INFO L226 Difference]: Without dead ends: 658 [2023-12-15 18:10:49,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,598 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 59 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 166 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2023-12-15 18:10:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 480. [2023-12-15 18:10:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.7661795407098122) internal successors, (846), 479 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 846 transitions. [2023-12-15 18:10:49,617 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 846 transitions. Word has length 23 [2023-12-15 18:10:49,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,617 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 846 transitions. [2023-12-15 18:10:49,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,617 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 846 transitions. [2023-12-15 18:10:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-15 18:10:49,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:10:49,619 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,620 INFO L85 PathProgramCache]: Analyzing trace with hash 582225662, now seen corresponding path program 1 times [2023-12-15 18:10:49,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048394840] [2023-12-15 18:10:49,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048394840] [2023-12-15 18:10:49,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048394840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421885757] [2023-12-15 18:10:49,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,659 INFO L87 Difference]: Start difference. First operand 480 states and 846 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,679 INFO L93 Difference]: Finished difference Result 1156 states and 2048 transitions. [2023-12-15 18:10:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-15 18:10:49,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,683 INFO L225 Difference]: With dead ends: 1156 [2023-12-15 18:10:49,683 INFO L226 Difference]: Without dead ends: 682 [2023-12-15 18:10:49,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,684 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 65 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 199 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-12-15 18:10:49,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 680. [2023-12-15 18:10:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 1.7584683357879234) internal successors, (1194), 679 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1194 transitions. [2023-12-15 18:10:49,698 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1194 transitions. Word has length 23 [2023-12-15 18:10:49,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,699 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1194 transitions. [2023-12-15 18:10:49,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1194 transitions. [2023-12-15 18:10:49,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-15 18:10:49,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:10:49,700 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1431483177, now seen corresponding path program 1 times [2023-12-15 18:10:49,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010712563] [2023-12-15 18:10:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010712563] [2023-12-15 18:10:49,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010712563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155135699] [2023-12-15 18:10:49,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,735 INFO L87 Difference]: Start difference. First operand 680 states and 1194 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,753 INFO L93 Difference]: Finished difference Result 1028 states and 1800 transitions. [2023-12-15 18:10:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-15 18:10:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,756 INFO L225 Difference]: With dead ends: 1028 [2023-12-15 18:10:49,756 INFO L226 Difference]: Without dead ends: 694 [2023-12-15 18:10:49,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,757 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 67 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 209 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2023-12-15 18:10:49,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 692. [2023-12-15 18:10:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.739507959479016) internal successors, (1202), 691 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1202 transitions. [2023-12-15 18:10:49,771 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1202 transitions. Word has length 24 [2023-12-15 18:10:49,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,771 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1202 transitions. [2023-12-15 18:10:49,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,772 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1202 transitions. [2023-12-15 18:10:49,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-15 18:10:49,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:10:49,773 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,773 INFO L85 PathProgramCache]: Analyzing trace with hash 869339413, now seen corresponding path program 1 times [2023-12-15 18:10:49,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923595154] [2023-12-15 18:10:49,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923595154] [2023-12-15 18:10:49,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923595154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329277871] [2023-12-15 18:10:49,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,823 INFO L87 Difference]: Start difference. First operand 692 states and 1202 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,841 INFO L93 Difference]: Finished difference Result 1288 states and 2268 transitions. [2023-12-15 18:10:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-15 18:10:49,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,848 INFO L225 Difference]: With dead ends: 1288 [2023-12-15 18:10:49,848 INFO L226 Difference]: Without dead ends: 1286 [2023-12-15 18:10:49,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,849 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 56 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 164 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2023-12-15 18:10:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 964. [2023-12-15 18:10:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 963 states have (on average 1.7050882658359294) internal successors, (1642), 963 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1642 transitions. [2023-12-15 18:10:49,867 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1642 transitions. Word has length 24 [2023-12-15 18:10:49,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,867 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1642 transitions. [2023-12-15 18:10:49,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,867 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1642 transitions. [2023-12-15 18:10:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-15 18:10:49,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:10:49,869 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash -719008489, now seen corresponding path program 1 times [2023-12-15 18:10:49,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798501524] [2023-12-15 18:10:49,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798501524] [2023-12-15 18:10:49,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798501524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379240762] [2023-12-15 18:10:49,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,898 INFO L87 Difference]: Start difference. First operand 964 states and 1642 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,922 INFO L93 Difference]: Finished difference Result 2296 states and 3932 transitions. [2023-12-15 18:10:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-15 18:10:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,927 INFO L225 Difference]: With dead ends: 2296 [2023-12-15 18:10:49,927 INFO L226 Difference]: Without dead ends: 1350 [2023-12-15 18:10:49,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,929 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 64 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 200 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2023-12-15 18:10:49,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1348. [2023-12-15 18:10:49,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 1.70007423904974) internal successors, (2290), 1347 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2290 transitions. [2023-12-15 18:10:49,952 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2290 transitions. Word has length 24 [2023-12-15 18:10:49,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,953 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 2290 transitions. [2023-12-15 18:10:49,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2290 transitions. [2023-12-15 18:10:49,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-15 18:10:49,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:10:49,955 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1179931443, now seen corresponding path program 1 times [2023-12-15 18:10:49,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98843187] [2023-12-15 18:10:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98843187] [2023-12-15 18:10:49,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98843187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8897171] [2023-12-15 18:10:49,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,980 INFO L87 Difference]: Start difference. First operand 1348 states and 2290 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,002 INFO L93 Difference]: Finished difference Result 2024 states and 3428 transitions. [2023-12-15 18:10:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-15 18:10:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,006 INFO L225 Difference]: With dead ends: 2024 [2023-12-15 18:10:50,006 INFO L226 Difference]: Without dead ends: 1366 [2023-12-15 18:10:50,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,007 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 66 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 205 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2023-12-15 18:10:50,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1364. [2023-12-15 18:10:50,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 1.6801173881144533) internal successors, (2290), 1363 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 2290 transitions. [2023-12-15 18:10:50,034 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 2290 transitions. Word has length 25 [2023-12-15 18:10:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,034 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 2290 transitions. [2023-12-15 18:10:50,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 2290 transitions. [2023-12-15 18:10:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-15 18:10:50,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:50,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:10:50,036 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,036 INFO L85 PathProgramCache]: Analyzing trace with hash -814213263, now seen corresponding path program 1 times [2023-12-15 18:10:50,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319864955] [2023-12-15 18:10:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319864955] [2023-12-15 18:10:50,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319864955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727058248] [2023-12-15 18:10:50,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,055 INFO L87 Difference]: Start difference. First operand 1364 states and 2290 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,083 INFO L93 Difference]: Finished difference Result 2504 states and 4276 transitions. [2023-12-15 18:10:50,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-15 18:10:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,090 INFO L225 Difference]: With dead ends: 2504 [2023-12-15 18:10:50,090 INFO L226 Difference]: Without dead ends: 2502 [2023-12-15 18:10:50,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,092 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 53 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 162 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2023-12-15 18:10:50,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 1924. [2023-12-15 18:10:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 1.640145605824233) internal successors, (3154), 1923 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3154 transitions. [2023-12-15 18:10:50,127 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3154 transitions. Word has length 25 [2023-12-15 18:10:50,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,127 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 3154 transitions. [2023-12-15 18:10:50,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3154 transitions. [2023-12-15 18:10:50,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-15 18:10:50,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:50,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:10:50,129 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1892406131, now seen corresponding path program 1 times [2023-12-15 18:10:50,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344377223] [2023-12-15 18:10:50,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344377223] [2023-12-15 18:10:50,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344377223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760013714] [2023-12-15 18:10:50,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,148 INFO L87 Difference]: Start difference. First operand 1924 states and 3154 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,204 INFO L93 Difference]: Finished difference Result 4552 states and 7508 transitions. [2023-12-15 18:10:50,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-15 18:10:50,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,211 INFO L225 Difference]: With dead ends: 4552 [2023-12-15 18:10:50,211 INFO L226 Difference]: Without dead ends: 2662 [2023-12-15 18:10:50,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,214 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 63 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 201 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2023-12-15 18:10:50,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2660. [2023-12-15 18:10:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2660 states, 2659 states have (on average 1.637457690861226) internal successors, (4354), 2659 states have internal predecessors, (4354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 4354 transitions. [2023-12-15 18:10:50,268 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 4354 transitions. Word has length 25 [2023-12-15 18:10:50,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,269 INFO L495 AbstractCegarLoop]: Abstraction has 2660 states and 4354 transitions. [2023-12-15 18:10:50,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 4354 transitions. [2023-12-15 18:10:50,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 18:10:50,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:50,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:10:50,271 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,271 INFO L85 PathProgramCache]: Analyzing trace with hash 529406380, now seen corresponding path program 1 times [2023-12-15 18:10:50,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370385115] [2023-12-15 18:10:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370385115] [2023-12-15 18:10:50,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370385115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129212360] [2023-12-15 18:10:50,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,295 INFO L87 Difference]: Start difference. First operand 2660 states and 4354 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,333 INFO L93 Difference]: Finished difference Result 3992 states and 6516 transitions. [2023-12-15 18:10:50,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-15 18:10:50,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,340 INFO L225 Difference]: With dead ends: 3992 [2023-12-15 18:10:50,340 INFO L226 Difference]: Without dead ends: 2694 [2023-12-15 18:10:50,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,342 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 65 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 201 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2023-12-15 18:10:50,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2692. [2023-12-15 18:10:50,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2691 states have (on average 1.617985878855444) internal successors, (4354), 2691 states have internal predecessors, (4354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4354 transitions. [2023-12-15 18:10:50,402 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4354 transitions. Word has length 26 [2023-12-15 18:10:50,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,402 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 4354 transitions. [2023-12-15 18:10:50,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4354 transitions. [2023-12-15 18:10:50,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 18:10:50,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:50,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:10:50,404 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1464738326, now seen corresponding path program 1 times [2023-12-15 18:10:50,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471039483] [2023-12-15 18:10:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471039483] [2023-12-15 18:10:50,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471039483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441191338] [2023-12-15 18:10:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,427 INFO L87 Difference]: Start difference. First operand 2692 states and 4354 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,516 INFO L93 Difference]: Finished difference Result 4872 states and 8036 transitions. [2023-12-15 18:10:50,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-15 18:10:50,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,528 INFO L225 Difference]: With dead ends: 4872 [2023-12-15 18:10:50,528 INFO L226 Difference]: Without dead ends: 4870 [2023-12-15 18:10:50,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,530 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 50 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 160 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2023-12-15 18:10:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 3844. [2023-12-15 18:10:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3843 states have (on average 1.5742909185532137) internal successors, (6050), 3843 states have internal predecessors, (6050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 6050 transitions. [2023-12-15 18:10:50,618 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 6050 transitions. Word has length 26 [2023-12-15 18:10:50,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,619 INFO L495 AbstractCegarLoop]: Abstraction has 3844 states and 6050 transitions. [2023-12-15 18:10:50,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 6050 transitions. [2023-12-15 18:10:50,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 18:10:50,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:50,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:10:50,622 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1241881068, now seen corresponding path program 1 times [2023-12-15 18:10:50,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299151331] [2023-12-15 18:10:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299151331] [2023-12-15 18:10:50,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299151331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977277156] [2023-12-15 18:10:50,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,645 INFO L87 Difference]: Start difference. First operand 3844 states and 6050 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,723 INFO L93 Difference]: Finished difference Result 9032 states and 14308 transitions. [2023-12-15 18:10:50,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-15 18:10:50,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,746 INFO L225 Difference]: With dead ends: 9032 [2023-12-15 18:10:50,746 INFO L226 Difference]: Without dead ends: 5254 [2023-12-15 18:10:50,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,750 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 62 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 202 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5254 states. [2023-12-15 18:10:50,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5254 to 5252. [2023-12-15 18:10:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5252 states, 5251 states have (on average 1.5726528280327556) internal successors, (8258), 5251 states have internal predecessors, (8258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8258 transitions. [2023-12-15 18:10:50,915 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8258 transitions. Word has length 26 [2023-12-15 18:10:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,915 INFO L495 AbstractCegarLoop]: Abstraction has 5252 states and 8258 transitions. [2023-12-15 18:10:50,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,915 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8258 transitions. [2023-12-15 18:10:50,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-15 18:10:50,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:50,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:10:50,920 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1837966248, now seen corresponding path program 1 times [2023-12-15 18:10:50,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895338194] [2023-12-15 18:10:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895338194] [2023-12-15 18:10:50,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895338194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503677501] [2023-12-15 18:10:50,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,941 INFO L87 Difference]: Start difference. First operand 5252 states and 8258 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:51,011 INFO L93 Difference]: Finished difference Result 7880 states and 12356 transitions. [2023-12-15 18:10:51,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:51,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-15 18:10:51,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:51,018 INFO L225 Difference]: With dead ends: 7880 [2023-12-15 18:10:51,018 INFO L226 Difference]: Without dead ends: 5318 [2023-12-15 18:10:51,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:51,022 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 64 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:51,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 197 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:51,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5318 states. [2023-12-15 18:10:51,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5318 to 5316. [2023-12-15 18:10:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 1.5537158984007526) internal successors, (8258), 5315 states have internal predecessors, (8258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 8258 transitions. [2023-12-15 18:10:51,134 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 8258 transitions. Word has length 27 [2023-12-15 18:10:51,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:51,134 INFO L495 AbstractCegarLoop]: Abstraction has 5316 states and 8258 transitions. [2023-12-15 18:10:51,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 8258 transitions. [2023-12-15 18:10:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-15 18:10:51,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:51,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:51,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:10:51,138 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:51,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:51,138 INFO L85 PathProgramCache]: Analyzing trace with hash -156178458, now seen corresponding path program 1 times [2023-12-15 18:10:51,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:51,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816342303] [2023-12-15 18:10:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:51,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:51,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:51,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816342303] [2023-12-15 18:10:51,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816342303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:51,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:51,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:51,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181522985] [2023-12-15 18:10:51,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:51,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:51,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:51,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:51,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:51,156 INFO L87 Difference]: Start difference. First operand 5316 states and 8258 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:51,310 INFO L93 Difference]: Finished difference Result 9480 states and 15044 transitions. [2023-12-15 18:10:51,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:51,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-15 18:10:51,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:51,322 INFO L225 Difference]: With dead ends: 9480 [2023-12-15 18:10:51,322 INFO L226 Difference]: Without dead ends: 9478 [2023-12-15 18:10:51,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:51,324 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 47 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:51,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 158 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:51,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9478 states. [2023-12-15 18:10:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9478 to 7684. [2023-12-15 18:10:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7684 states, 7683 states have (on average 1.5080046856696603) internal successors, (11586), 7683 states have internal predecessors, (11586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7684 states to 7684 states and 11586 transitions. [2023-12-15 18:10:51,470 INFO L78 Accepts]: Start accepts. Automaton has 7684 states and 11586 transitions. Word has length 27 [2023-12-15 18:10:51,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:51,470 INFO L495 AbstractCegarLoop]: Abstraction has 7684 states and 11586 transitions. [2023-12-15 18:10:51,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 7684 states and 11586 transitions. [2023-12-15 18:10:51,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-15 18:10:51,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:51,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:51,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:10:51,476 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:51,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1744526360, now seen corresponding path program 1 times [2023-12-15 18:10:51,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:51,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900187955] [2023-12-15 18:10:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:51,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:51,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900187955] [2023-12-15 18:10:51,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900187955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:51,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:51,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:51,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256989423] [2023-12-15 18:10:51,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:51,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:51,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:51,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:51,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:51,494 INFO L87 Difference]: Start difference. First operand 7684 states and 11586 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:51,625 INFO L93 Difference]: Finished difference Result 17928 states and 27204 transitions. [2023-12-15 18:10:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:51,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-15 18:10:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:51,640 INFO L225 Difference]: With dead ends: 17928 [2023-12-15 18:10:51,640 INFO L226 Difference]: Without dead ends: 10374 [2023-12-15 18:10:51,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:51,648 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 61 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:51,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 203 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:51,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10374 states. [2023-12-15 18:10:51,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10374 to 10372. [2023-12-15 18:10:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10372 states, 10371 states have (on average 1.5059299971073186) internal successors, (15618), 10371 states have internal predecessors, (15618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10372 states to 10372 states and 15618 transitions. [2023-12-15 18:10:51,904 INFO L78 Accepts]: Start accepts. Automaton has 10372 states and 15618 transitions. Word has length 27 [2023-12-15 18:10:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:51,904 INFO L495 AbstractCegarLoop]: Abstraction has 10372 states and 15618 transitions. [2023-12-15 18:10:51,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,904 INFO L276 IsEmpty]: Start isEmpty. Operand 10372 states and 15618 transitions. [2023-12-15 18:10:51,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-15 18:10:51,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:51,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:51,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:10:51,911 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:51,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:51,912 INFO L85 PathProgramCache]: Analyzing trace with hash -546350463, now seen corresponding path program 1 times [2023-12-15 18:10:51,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:51,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973641401] [2023-12-15 18:10:51,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:51,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:51,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:51,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973641401] [2023-12-15 18:10:51,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973641401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:51,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:51,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391823097] [2023-12-15 18:10:51,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:51,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:51,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:51,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:51,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:51,931 INFO L87 Difference]: Start difference. First operand 10372 states and 15618 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:52,065 INFO L93 Difference]: Finished difference Result 15560 states and 23364 transitions. [2023-12-15 18:10:52,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:52,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-15 18:10:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:52,081 INFO L225 Difference]: With dead ends: 15560 [2023-12-15 18:10:52,081 INFO L226 Difference]: Without dead ends: 10502 [2023-12-15 18:10:52,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:52,090 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 63 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:52,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 193 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:52,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10502 states. [2023-12-15 18:10:52,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10502 to 10500. [2023-12-15 18:10:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10500 states, 10499 states have (on average 1.4875702447852177) internal successors, (15618), 10499 states have internal predecessors, (15618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10500 states to 10500 states and 15618 transitions. [2023-12-15 18:10:52,408 INFO L78 Accepts]: Start accepts. Automaton has 10500 states and 15618 transitions. Word has length 28 [2023-12-15 18:10:52,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:52,408 INFO L495 AbstractCegarLoop]: Abstraction has 10500 states and 15618 transitions. [2023-12-15 18:10:52,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,409 INFO L276 IsEmpty]: Start isEmpty. Operand 10500 states and 15618 transitions. [2023-12-15 18:10:52,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-15 18:10:52,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:52,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:52,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:10:52,415 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:52,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:52,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1754472127, now seen corresponding path program 1 times [2023-12-15 18:10:52,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:52,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596201170] [2023-12-15 18:10:52,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:52,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:52,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:52,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596201170] [2023-12-15 18:10:52,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596201170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:52,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:52,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:52,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351811380] [2023-12-15 18:10:52,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:52,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:52,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:52,440 INFO L87 Difference]: Start difference. First operand 10500 states and 15618 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:52,654 INFO L93 Difference]: Finished difference Result 18440 states and 28036 transitions. [2023-12-15 18:10:52,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:52,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-15 18:10:52,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:52,678 INFO L225 Difference]: With dead ends: 18440 [2023-12-15 18:10:52,679 INFO L226 Difference]: Without dead ends: 18438 [2023-12-15 18:10:52,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:52,682 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 44 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:52,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 156 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18438 states. [2023-12-15 18:10:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18438 to 15364. [2023-12-15 18:10:52,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15364 states, 15363 states have (on average 1.4415153290372975) internal successors, (22146), 15363 states have internal predecessors, (22146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15364 states to 15364 states and 22146 transitions. [2023-12-15 18:10:52,933 INFO L78 Accepts]: Start accepts. Automaton has 15364 states and 22146 transitions. Word has length 28 [2023-12-15 18:10:52,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:52,934 INFO L495 AbstractCegarLoop]: Abstraction has 15364 states and 22146 transitions. [2023-12-15 18:10:52,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,934 INFO L276 IsEmpty]: Start isEmpty. Operand 15364 states and 22146 transitions. [2023-12-15 18:10:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-15 18:10:52,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:52,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:52,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:10:52,945 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:52,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:52,946 INFO L85 PathProgramCache]: Analyzing trace with hash 166124225, now seen corresponding path program 1 times [2023-12-15 18:10:52,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:52,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463320526] [2023-12-15 18:10:52,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:52,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:52,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:52,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463320526] [2023-12-15 18:10:52,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463320526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:52,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:52,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:52,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120807215] [2023-12-15 18:10:52,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:52,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:52,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:52,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:52,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:52,970 INFO L87 Difference]: Start difference. First operand 15364 states and 22146 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:53,187 INFO L93 Difference]: Finished difference Result 35592 states and 51588 transitions. [2023-12-15 18:10:53,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:53,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-15 18:10:53,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:53,215 INFO L225 Difference]: With dead ends: 35592 [2023-12-15 18:10:53,215 INFO L226 Difference]: Without dead ends: 20486 [2023-12-15 18:10:53,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:53,230 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 60 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:53,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 204 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:53,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20486 states. [2023-12-15 18:10:53,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20486 to 20484. [2023-12-15 18:10:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20484 states, 20483 states have (on average 1.4373871014988038) internal successors, (29442), 20483 states have internal predecessors, (29442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:53,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20484 states to 20484 states and 29442 transitions. [2023-12-15 18:10:53,658 INFO L78 Accepts]: Start accepts. Automaton has 20484 states and 29442 transitions. Word has length 28 [2023-12-15 18:10:53,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:53,658 INFO L495 AbstractCegarLoop]: Abstraction has 20484 states and 29442 transitions. [2023-12-15 18:10:53,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:53,658 INFO L276 IsEmpty]: Start isEmpty. Operand 20484 states and 29442 transitions. [2023-12-15 18:10:53,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-15 18:10:53,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:53,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:53,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 18:10:53,671 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:53,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:53,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1445724131, now seen corresponding path program 1 times [2023-12-15 18:10:53,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:53,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765242339] [2023-12-15 18:10:53,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:53,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:53,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:53,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765242339] [2023-12-15 18:10:53,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765242339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:53,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:53,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:53,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72347784] [2023-12-15 18:10:53,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:53,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:53,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:53,700 INFO L87 Difference]: Start difference. First operand 20484 states and 29442 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:53,958 INFO L93 Difference]: Finished difference Result 30728 states and 44036 transitions. [2023-12-15 18:10:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:53,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-15 18:10:53,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:53,985 INFO L225 Difference]: With dead ends: 30728 [2023-12-15 18:10:53,985 INFO L226 Difference]: Without dead ends: 20742 [2023-12-15 18:10:53,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:53,995 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 62 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:53,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 189 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:54,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20742 states. [2023-12-15 18:10:54,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20742 to 20740. [2023-12-15 18:10:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20740 states, 20739 states have (on average 1.4196441487053377) internal successors, (29442), 20739 states have internal predecessors, (29442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20740 states to 20740 states and 29442 transitions. [2023-12-15 18:10:54,375 INFO L78 Accepts]: Start accepts. Automaton has 20740 states and 29442 transitions. Word has length 29 [2023-12-15 18:10:54,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:54,375 INFO L495 AbstractCegarLoop]: Abstraction has 20740 states and 29442 transitions. [2023-12-15 18:10:54,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:54,375 INFO L276 IsEmpty]: Start isEmpty. Operand 20740 states and 29442 transitions. [2023-12-15 18:10:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-15 18:10:54,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:54,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:54,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 18:10:54,390 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:54,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:54,390 INFO L85 PathProgramCache]: Analyzing trace with hash 855098459, now seen corresponding path program 1 times [2023-12-15 18:10:54,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:54,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013576415] [2023-12-15 18:10:54,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:54,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:54,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:54,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013576415] [2023-12-15 18:10:54,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013576415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:54,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:54,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:54,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145352471] [2023-12-15 18:10:54,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:54,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:54,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:54,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:54,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:54,406 INFO L87 Difference]: Start difference. First operand 20740 states and 29442 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:54,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:54,655 INFO L93 Difference]: Finished difference Result 35848 states and 51972 transitions. [2023-12-15 18:10:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:54,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-15 18:10:54,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:54,779 INFO L225 Difference]: With dead ends: 35848 [2023-12-15 18:10:54,780 INFO L226 Difference]: Without dead ends: 35846 [2023-12-15 18:10:54,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:54,784 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 41 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:54,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 154 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:54,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35846 states. [2023-12-15 18:10:55,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35846 to 30724. [2023-12-15 18:10:55,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30724 states, 30723 states have (on average 1.3749308335774502) internal successors, (42242), 30723 states have internal predecessors, (42242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:55,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30724 states to 30724 states and 42242 transitions. [2023-12-15 18:10:55,146 INFO L78 Accepts]: Start accepts. Automaton has 30724 states and 42242 transitions. Word has length 29 [2023-12-15 18:10:55,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:55,146 INFO L495 AbstractCegarLoop]: Abstraction has 30724 states and 42242 transitions. [2023-12-15 18:10:55,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:55,146 INFO L276 IsEmpty]: Start isEmpty. Operand 30724 states and 42242 transitions. [2023-12-15 18:10:55,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-15 18:10:55,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:55,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:55,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 18:10:55,162 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:55,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:55,162 INFO L85 PathProgramCache]: Analyzing trace with hash -733249443, now seen corresponding path program 1 times [2023-12-15 18:10:55,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:55,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375381796] [2023-12-15 18:10:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:55,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:55,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:55,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375381796] [2023-12-15 18:10:55,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375381796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:55,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:55,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:55,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354398328] [2023-12-15 18:10:55,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:55,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:55,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:55,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:55,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:55,178 INFO L87 Difference]: Start difference. First operand 30724 states and 42242 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:55,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:55,743 INFO L93 Difference]: Finished difference Result 70664 states and 97540 transitions. [2023-12-15 18:10:55,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:55,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-15 18:10:55,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:55,787 INFO L225 Difference]: With dead ends: 70664 [2023-12-15 18:10:55,787 INFO L226 Difference]: Without dead ends: 40454 [2023-12-15 18:10:55,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:55,814 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 59 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:55,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 205 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:55,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40454 states. [2023-12-15 18:10:56,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40454 to 40452. [2023-12-15 18:10:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40452 states, 40451 states have (on average 1.367036661640009) internal successors, (55298), 40451 states have internal predecessors, (55298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:56,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40452 states to 40452 states and 55298 transitions. [2023-12-15 18:10:56,635 INFO L78 Accepts]: Start accepts. Automaton has 40452 states and 55298 transitions. Word has length 29 [2023-12-15 18:10:56,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:56,635 INFO L495 AbstractCegarLoop]: Abstraction has 40452 states and 55298 transitions. [2023-12-15 18:10:56,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:56,636 INFO L276 IsEmpty]: Start isEmpty. Operand 40452 states and 55298 transitions. [2023-12-15 18:10:56,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 18:10:56,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:56,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:56,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 18:10:56,656 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:56,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:56,657 INFO L85 PathProgramCache]: Analyzing trace with hash 738463574, now seen corresponding path program 1 times [2023-12-15 18:10:56,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:56,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821856234] [2023-12-15 18:10:56,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:56,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:56,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:56,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821856234] [2023-12-15 18:10:56,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821856234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:56,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:56,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:56,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653400046] [2023-12-15 18:10:56,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:56,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:56,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:56,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:56,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:56,672 INFO L87 Difference]: Start difference. First operand 40452 states and 55298 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:57,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:57,093 INFO L93 Difference]: Finished difference Result 60680 states and 82692 transitions. [2023-12-15 18:10:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:57,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-15 18:10:57,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:57,137 INFO L225 Difference]: With dead ends: 60680 [2023-12-15 18:10:57,137 INFO L226 Difference]: Without dead ends: 40966 [2023-12-15 18:10:57,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:57,158 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 61 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:57,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 185 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40966 states. [2023-12-15 18:10:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40966 to 40964. [2023-12-15 18:10:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40964 states, 40963 states have (on average 1.3499499548372922) internal successors, (55298), 40963 states have internal predecessors, (55298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:58,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40964 states to 40964 states and 55298 transitions. [2023-12-15 18:10:58,235 INFO L78 Accepts]: Start accepts. Automaton has 40964 states and 55298 transitions. Word has length 30 [2023-12-15 18:10:58,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:58,235 INFO L495 AbstractCegarLoop]: Abstraction has 40964 states and 55298 transitions. [2023-12-15 18:10:58,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:58,236 INFO L276 IsEmpty]: Start isEmpty. Operand 40964 states and 55298 transitions. [2023-12-15 18:10:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 18:10:58,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:58,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:58,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-15 18:10:58,251 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:58,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:58,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1255681132, now seen corresponding path program 1 times [2023-12-15 18:10:58,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:58,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123111678] [2023-12-15 18:10:58,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:58,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:58,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:58,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123111678] [2023-12-15 18:10:58,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123111678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:58,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:58,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:58,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875893873] [2023-12-15 18:10:58,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:58,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:58,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:58,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:58,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:58,266 INFO L87 Difference]: Start difference. First operand 40964 states and 55298 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:58,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:58,930 INFO L93 Difference]: Finished difference Result 119816 states and 159748 transitions. [2023-12-15 18:10:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:58,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-15 18:10:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:59,009 INFO L225 Difference]: With dead ends: 119816 [2023-12-15 18:10:59,010 INFO L226 Difference]: Without dead ends: 79878 [2023-12-15 18:10:59,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:59,034 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 59 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:59,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 172 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:59,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79878 states. [2023-12-15 18:11:00,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79878 to 79876. [2023-12-15 18:11:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79876 states, 79875 states have (on average 1.3076682316118935) internal successors, (104450), 79875 states have internal predecessors, (104450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79876 states to 79876 states and 104450 transitions. [2023-12-15 18:11:00,610 INFO L78 Accepts]: Start accepts. Automaton has 79876 states and 104450 transitions. Word has length 30 [2023-12-15 18:11:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:00,610 INFO L495 AbstractCegarLoop]: Abstraction has 79876 states and 104450 transitions. [2023-12-15 18:11:00,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 79876 states and 104450 transitions. [2023-12-15 18:11:00,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 18:11:00,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:00,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:00,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-15 18:11:00,660 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:00,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:00,660 INFO L85 PathProgramCache]: Analyzing trace with hash 332666770, now seen corresponding path program 1 times [2023-12-15 18:11:00,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:00,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988739185] [2023-12-15 18:11:00,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:00,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:00,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988739185] [2023-12-15 18:11:00,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988739185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:00,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:00,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:00,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750594576] [2023-12-15 18:11:00,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:00,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:00,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:00,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:00,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:00,675 INFO L87 Difference]: Start difference. First operand 79876 states and 104450 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:01,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:01,777 INFO L93 Difference]: Finished difference Result 88072 states and 118788 transitions. [2023-12-15 18:11:01,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:01,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-15 18:11:01,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:01,887 INFO L225 Difference]: With dead ends: 88072 [2023-12-15 18:11:01,888 INFO L226 Difference]: Without dead ends: 88070 [2023-12-15 18:11:01,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:01,901 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 38 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:01,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 199 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88070 states. [2023-12-15 18:11:03,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88070 to 79876. [2023-12-15 18:11:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79876 states, 79875 states have (on average 1.294848200312989) internal successors, (103426), 79875 states have internal predecessors, (103426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:03,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79876 states to 79876 states and 103426 transitions. [2023-12-15 18:11:03,254 INFO L78 Accepts]: Start accepts. Automaton has 79876 states and 103426 transitions. Word has length 30 [2023-12-15 18:11:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:03,255 INFO L495 AbstractCegarLoop]: Abstraction has 79876 states and 103426 transitions. [2023-12-15 18:11:03,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:03,255 INFO L276 IsEmpty]: Start isEmpty. Operand 79876 states and 103426 transitions. [2023-12-15 18:11:03,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-15 18:11:03,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:03,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:03,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-15 18:11:03,291 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:03,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:03,291 INFO L85 PathProgramCache]: Analyzing trace with hash -271193966, now seen corresponding path program 1 times [2023-12-15 18:11:03,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:03,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896048316] [2023-12-15 18:11:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:03,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:03,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:03,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896048316] [2023-12-15 18:11:03,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896048316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:03,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:03,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:03,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056753525] [2023-12-15 18:11:03,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:03,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:03,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:03,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:03,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:03,306 INFO L87 Difference]: Start difference. First operand 79876 states and 103426 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:04,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:04,589 INFO L93 Difference]: Finished difference Result 134152 states and 176132 transitions. [2023-12-15 18:11:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:04,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-15 18:11:04,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:04,734 INFO L225 Difference]: With dead ends: 134152 [2023-12-15 18:11:04,734 INFO L226 Difference]: Without dead ends: 134150 [2023-12-15 18:11:04,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:04,758 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 35 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:04,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 150 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:04,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134150 states. [2023-12-15 18:11:06,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134150 to 121860. [2023-12-15 18:11:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121860 states, 121859 states have (on average 1.2604895822220763) internal successors, (153602), 121859 states have internal predecessors, (153602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121860 states to 121860 states and 153602 transitions. [2023-12-15 18:11:06,603 INFO L78 Accepts]: Start accepts. Automaton has 121860 states and 153602 transitions. Word has length 31 [2023-12-15 18:11:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:06,603 INFO L495 AbstractCegarLoop]: Abstraction has 121860 states and 153602 transitions. [2023-12-15 18:11:06,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 121860 states and 153602 transitions. [2023-12-15 18:11:06,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-15 18:11:06,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:06,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:06,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-15 18:11:06,652 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:06,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:06,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1859541868, now seen corresponding path program 1 times [2023-12-15 18:11:06,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:06,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779909198] [2023-12-15 18:11:06,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:06,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:06,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:06,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779909198] [2023-12-15 18:11:06,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779909198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:06,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:06,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:06,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906879681] [2023-12-15 18:11:06,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:06,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:06,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:06,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:06,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:06,824 INFO L87 Difference]: Start difference. First operand 121860 states and 153602 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:08,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:08,421 INFO L93 Difference]: Finished difference Result 277512 states and 350212 transitions. [2023-12-15 18:11:08,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:08,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-15 18:11:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:08,564 INFO L225 Difference]: With dead ends: 277512 [2023-12-15 18:11:08,564 INFO L226 Difference]: Without dead ends: 156678 [2023-12-15 18:11:08,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:08,771 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 57 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:08,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 207 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156678 states. [2023-12-15 18:11:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156678 to 156676. [2023-12-15 18:11:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156676 states, 156675 states have (on average 1.2418190521780756) internal successors, (194562), 156675 states have internal predecessors, (194562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:11,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156676 states to 156676 states and 194562 transitions. [2023-12-15 18:11:11,477 INFO L78 Accepts]: Start accepts. Automaton has 156676 states and 194562 transitions. Word has length 31 [2023-12-15 18:11:11,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:11,478 INFO L495 AbstractCegarLoop]: Abstraction has 156676 states and 194562 transitions. [2023-12-15 18:11:11,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:11,478 INFO L276 IsEmpty]: Start isEmpty. Operand 156676 states and 194562 transitions. [2023-12-15 18:11:11,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-15 18:11:11,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:11,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:11,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-15 18:11:11,549 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:11,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:11,549 INFO L85 PathProgramCache]: Analyzing trace with hash 183137449, now seen corresponding path program 1 times [2023-12-15 18:11:11,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:11,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356542888] [2023-12-15 18:11:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:11,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:11,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:11,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356542888] [2023-12-15 18:11:11,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356542888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:11,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:11,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:11,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33868293] [2023-12-15 18:11:11,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:11,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:11,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:11,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:11,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:11,561 INFO L87 Difference]: Start difference. First operand 156676 states and 194562 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:13,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:13,284 INFO L93 Difference]: Finished difference Result 236552 states and 293892 transitions. [2023-12-15 18:11:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:13,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-15 18:11:13,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:13,552 INFO L225 Difference]: With dead ends: 236552 [2023-12-15 18:11:13,553 INFO L226 Difference]: Without dead ends: 159750 [2023-12-15 18:11:13,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:13,594 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 59 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:13,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 177 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:13,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159750 states. [2023-12-15 18:11:16,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159750 to 159748. [2023-12-15 18:11:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159748 states, 159747 states have (on average 1.2307586370949064) internal successors, (196610), 159747 states have internal predecessors, (196610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159748 states to 159748 states and 196610 transitions. [2023-12-15 18:11:16,537 INFO L78 Accepts]: Start accepts. Automaton has 159748 states and 196610 transitions. Word has length 32 [2023-12-15 18:11:16,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:16,538 INFO L495 AbstractCegarLoop]: Abstraction has 159748 states and 196610 transitions. [2023-12-15 18:11:16,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:16,540 INFO L276 IsEmpty]: Start isEmpty. Operand 159748 states and 196610 transitions. [2023-12-15 18:11:16,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-15 18:11:16,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:16,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:16,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-15 18:11:16,637 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:16,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:16,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1811007257, now seen corresponding path program 1 times [2023-12-15 18:11:16,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:16,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636827911] [2023-12-15 18:11:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:16,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:16,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:16,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636827911] [2023-12-15 18:11:16,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636827911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:16,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:16,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:16,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697973749] [2023-12-15 18:11:16,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:16,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:16,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:16,664 INFO L87 Difference]: Start difference. First operand 159748 states and 196610 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:19,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:19,221 INFO L93 Difference]: Finished difference Result 262152 states and 323588 transitions. [2023-12-15 18:11:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:19,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-15 18:11:19,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:19,517 INFO L225 Difference]: With dead ends: 262152 [2023-12-15 18:11:19,518 INFO L226 Difference]: Without dead ends: 262150 [2023-12-15 18:11:19,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:19,564 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 32 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:19,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 148 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:19,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262150 states. [2023-12-15 18:11:22,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262150 to 245764. [2023-12-15 18:11:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245764 states, 245763 states have (on average 1.1999934896628053) internal successors, (294914), 245763 states have internal predecessors, (294914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245764 states to 245764 states and 294914 transitions. [2023-12-15 18:11:23,596 INFO L78 Accepts]: Start accepts. Automaton has 245764 states and 294914 transitions. Word has length 32 [2023-12-15 18:11:23,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:23,596 INFO L495 AbstractCegarLoop]: Abstraction has 245764 states and 294914 transitions. [2023-12-15 18:11:23,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 245764 states and 294914 transitions. [2023-12-15 18:11:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-15 18:11:23,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:23,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:23,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-15 18:11:23,733 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:23,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:23,733 INFO L85 PathProgramCache]: Analyzing trace with hash 895612137, now seen corresponding path program 1 times [2023-12-15 18:11:23,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:23,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024530209] [2023-12-15 18:11:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:23,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:23,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:23,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024530209] [2023-12-15 18:11:23,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024530209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:23,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:23,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:23,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638667893] [2023-12-15 18:11:23,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:23,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:23,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:23,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:23,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:23,745 INFO L87 Difference]: Start difference. First operand 245764 states and 294914 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:27,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:27,060 INFO L93 Difference]: Finished difference Result 552968 states and 659460 transitions. [2023-12-15 18:11:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:27,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-15 18:11:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:27,371 INFO L225 Difference]: With dead ends: 552968 [2023-12-15 18:11:27,371 INFO L226 Difference]: Without dead ends: 311302 [2023-12-15 18:11:27,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:27,488 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 56 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:27,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 208 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:27,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311302 states. [2023-12-15 18:11:32,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311302 to 311300. [2023-12-15 18:11:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311300 states, 311299 states have (on average 1.1710477707927105) internal successors, (364546), 311299 states have internal predecessors, (364546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311300 states to 311300 states and 364546 transitions. [2023-12-15 18:11:33,545 INFO L78 Accepts]: Start accepts. Automaton has 311300 states and 364546 transitions. Word has length 32 [2023-12-15 18:11:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:33,545 INFO L495 AbstractCegarLoop]: Abstraction has 311300 states and 364546 transitions. [2023-12-15 18:11:33,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 311300 states and 364546 transitions. [2023-12-15 18:11:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-15 18:11:33,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:33,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:33,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-15 18:11:33,703 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:33,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:33,703 INFO L85 PathProgramCache]: Analyzing trace with hash -306433975, now seen corresponding path program 1 times [2023-12-15 18:11:33,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:33,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097441038] [2023-12-15 18:11:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:33,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:33,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:33,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:33,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097441038] [2023-12-15 18:11:33,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097441038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:33,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:33,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:33,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884902932] [2023-12-15 18:11:33,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:33,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:33,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:33,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:33,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:33,715 INFO L87 Difference]: Start difference. First operand 311300 states and 364546 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:37,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:37,196 INFO L93 Difference]: Finished difference Result 466952 states and 544772 transitions. [2023-12-15 18:11:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:37,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-15 18:11:37,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:37,541 INFO L225 Difference]: With dead ends: 466952 [2023-12-15 18:11:37,541 INFO L226 Difference]: Without dead ends: 315398 [2023-12-15 18:11:37,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:37,631 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 58 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:37,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 173 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:37,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315398 states. [2023-12-15 18:11:42,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315398 to 315396. [2023-12-15 18:11:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315396 states, 315395 states have (on average 1.155839502845638) internal successors, (364546), 315395 states have internal predecessors, (364546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:43,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315396 states to 315396 states and 364546 transitions. [2023-12-15 18:11:43,238 INFO L78 Accepts]: Start accepts. Automaton has 315396 states and 364546 transitions. Word has length 33 [2023-12-15 18:11:43,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:43,238 INFO L495 AbstractCegarLoop]: Abstraction has 315396 states and 364546 transitions. [2023-12-15 18:11:43,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 315396 states and 364546 transitions. [2023-12-15 18:11:43,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-15 18:11:43,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:43,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:43,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-15 18:11:43,376 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:43,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:43,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1994388615, now seen corresponding path program 1 times [2023-12-15 18:11:43,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:43,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369962486] [2023-12-15 18:11:43,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:43,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:43,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:43,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369962486] [2023-12-15 18:11:43,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369962486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:43,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:43,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:43,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619057436] [2023-12-15 18:11:43,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:43,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:43,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:43,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:43,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:43,405 INFO L87 Difference]: Start difference. First operand 315396 states and 364546 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 18:11:47,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:47,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:47,378 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 28 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:47,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 145 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:47,379 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:11:47,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-15 18:11:47,380 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (315396states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (384725 states constructed, input type IntersectNwa). [2023-12-15 18:11:47,383 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:47,385 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:11:47,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:11:47 BoogieIcfgContainer [2023-12-15 18:11:47,386 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:11:47,387 INFO L158 Benchmark]: Toolchain (without parser) took 59365.48ms. Allocated memory was 249.6MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 199.6MB in the beginning and 4.6GB in the end (delta: -4.4GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-15 18:11:47,387 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 204.5MB. Free memory was 155.3MB in the beginning and 155.2MB in the end (delta: 155.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:11:47,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.87ms. Allocated memory is still 249.6MB. Free memory was 199.3MB in the beginning and 187.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 18:11:47,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.52ms. Allocated memory is still 249.6MB. Free memory was 187.3MB in the beginning and 185.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 18:11:47,387 INFO L158 Benchmark]: Boogie Preprocessor took 27.77ms. Allocated memory is still 249.6MB. Free memory was 185.3MB in the beginning and 183.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 18:11:47,387 INFO L158 Benchmark]: RCFGBuilder took 319.30ms. Allocated memory is still 249.6MB. Free memory was 183.2MB in the beginning and 166.1MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 18:11:47,387 INFO L158 Benchmark]: TraceAbstraction took 58806.89ms. Allocated memory was 249.6MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 165.4MB in the beginning and 4.6GB in the end (delta: -4.4GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-15 18:11:47,390 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 204.5MB. Free memory was 155.3MB in the beginning and 155.2MB in the end (delta: 155.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 169.87ms. Allocated memory is still 249.6MB. Free memory was 199.3MB in the beginning and 187.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.52ms. Allocated memory is still 249.6MB. Free memory was 187.3MB in the beginning and 185.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.77ms. Allocated memory is still 249.6MB. Free memory was 185.3MB in the beginning and 183.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 319.30ms. Allocated memory is still 249.6MB. Free memory was 183.2MB in the beginning and 166.1MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 58806.89ms. Allocated memory was 249.6MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 165.4MB in the beginning and 4.6GB in the end (delta: -4.4GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 219]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 219). Cancelled while NwaCegarLoop was constructing difference of abstraction (315396states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (384725 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.8s, OverallIterations: 38, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.9s, AutomataDifference: 25.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2192 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2192 mSDsluCounter, 7082 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2886 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 244 IncrementalHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 4196 mSDtfsCounter, 244 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=315396occurred in iteration=37, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 30.8s AutomataMinimizationTime, 37 MinimizatonAttempts, 49194 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1006 NumberOfCodeBlocks, 1006 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 968 ConstructedInterpolants, 0 QuantifiedInterpolants, 2214 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown